JPH0213157Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a plate cylinder of a plate roll device of a rotary printing press, and in particular, the plate cylinder collar to which the plate is attached can be adjusted in the axial direction and circumferential direction with respect to the rotation axis of the plate roll. Regarding the structure of the plate cylinder.

Unlike the case where printing is done intensively and in large quantities at a specialized printing factory, we use a three-dimensional article printing machine that prints marks, letters, numbers, etc. on various small articles, such as small cases, electromechanical parts, etc. With conventional plate cylinders used for sideline printing in product manufacturing factories, the work of positioning the plate in the axial direction and circumferential direction of the plate cylinder when attaching the plate to the plate cylinder is difficult. Because it is directly linked to the printing position accuracy on printed matter,
Considerable care is required, and once the plate has been attached to the plate cylinder, shifting the printed characters or marks in any direction on the printing surface requires removing the plate cylinder or using special aids. However, it is not easy, as it requires adjustment of the printing material supply device.

This invention was made in view of the above, and
When printing at the desired position on the printing material,
To provide a device in which a plate is attached to an approximate position on a plate cylinder and the plate can be easily adjusted and moved in any direction on a printing surface while the plate cylinder remains attached to a plate roll rotation shaft. The purpose is to

Embodiments of the present invention will be described below based on the drawings.

FIG. 1 shows a front view of a two-color printing example of a rotary type small-sized three-dimensional article printing machine according to the present invention.

A printing device block 2 is attached to the upper part of a vertically disposed main frame 1, and a printing material supplying device block 3 is attached to the lower part of the main frame 1.

The printing device block 2 includes a front flat panel 4, a group of rotation axes supported by the rear flat panel provided behind and parallel to the front flat panel 4, and a group of rotating shafts supported by the front flat panel 4. It consists of each roll group fitted on the front and a gear mechanism installed between both flat panels.

The means for attaching this printing device block 2 to the main frame 1 is to provide a first pin 6 serving as a fixed support point at the lower right corner of both flat panels, and hold the block 2 so that the entire block 2 can rotate around this first pin 6. A second pin 7 serving as a movable support point is provided on the left side of both flat panels, and this pin 7 is provided on the upper edge 8 of the main frame 1, with an adjustment knob 5, a male screw 9 at the lower end of the knob, A member 10 having a female screw portion opposite to the male screw 9 and a link 11 connecting the second pin 7 are used to adjustably attach the member 10 to the second pin 7.

The printing material placed on the printing material supply device block 3 is transferred to the printing roll 12 of the printing device block 2.
Printing is done when passing through. A first color plate roll 13A and a second color plate roll 13B rotate in contact with the printing roll 12, and the plate rolls 13A, 13
Grind printing roll groups 14A to 18A and 14B to 18B are arranged to supply ink to B, respectively.

FIG. 2 shows a side half-sectional view of an embodiment of the present invention.

The plate roll rotation shaft 34 is supported by a bearing behind the flat panel 4, and its front portion projects forward of the flat panel 4, and the plate roll 12 is attached to the front protrusion. A female thread is formed on the front end surface of the shaft 34, and a tightening bolt 33 having a flange-shaped head is screwed into this female thread. The inner boss 21 is fitted on the outer periphery of the shaft 34, and the outer boss 22 is fitted on the outer periphery of the inner boss 21. An inward flange 38 is formed at the front end of the outer boss 22 and is interposed between the front edge of the inner boss 21 and the head of the tightening bolt 33. When the tightening bolt 33 is tightened, the outer boss 22 and the inner The boss 21 is fixed. A pin 31 is fixed to the outer circumference of the inner boss 21, and this pin 31 is fixed to the inner circumference of the outer boss 22.
A groove with a width slightly wider than the outer diameter of item 1 is formed around the entire circumference, and the inner boss 21 and the outer boss 22 are connected to the pin 31.
and are rotatably fitted to each other only in the circumferential direction by the groove.

A male thread is cut on the outer periphery of the outer boss 22, and a female thread that fits into the male thread is cut on the inner periphery of the drum 23, which rotates an outward flange-shaped knob 37 formed at the front end of the outer boss 22. This changes the axial position of the drum 23 with respect to the outer boss, thereby allowing the drum 23 to move in its axial relative position with the inner boss 21 or the plate roll rotation axis 34. In addition, the inner boss 21
A rotation stopper member 29 is fixed to the drum 23 by a fixing pin 30, and a groove that matches the rotation stopper member 29 is formed in the drum 23, so that the inner boss 21 and the drum 23 are integrated. rotate,
Furthermore, due to the relationship with the outer boss 22, the relative position in the axial direction can be moved.

On the other hand, a flange portion is provided at one end of the drum 23,
A male screw portion is formed at the other end, and the drum 23
The indexing collar 27 and plate cylinder collar 24, which are rotatably fitted on the outer periphery of the clamping collar 2,
6, a fixing ring 25 having a female thread that matches the male thread formed on the outer periphery of the drum 23;
It is clamped and fixed. A base line 36 is provided on the outer periphery of the plate cylinder collar 24, and a scale 35 is provided on the outer periphery of the index collar 27.
has a structure that can be fixed to the drum 23 with a set screw 28. In addition, the tightening collar 26 is
Groove formed on drum 23 and tightening collar 26
A pin 32 fixed to the plate cylinder collar 24 prevents the plate cylinder collar 24 from rotating when the fixing ring 25 is rotated.
The role is to prevent the circumferential position from shifting.

After attaching the plate to the plate cylinder collar 24, to shift the characters, figures, etc. on the printing surface in any direction,
Displacement in the axial direction can be determined by loosening the tightening bolt 33, rotating the knob 37 formed on the outer boss 22 by a predetermined amount in a predetermined direction, and then tightening the tightening bolt 33. For displacement, loosen the set screw 28 of the index collar 27 and align the base line 36 on the plate cylinder collar 24.
After aligning the scale 35 and fixing the index collar with the set screw 28, loosen the fixing ring 25, rotate the plate cylinder collar 24 in a predetermined direction by a predetermined amount according to the scale 35, and tighten the fixing ring. can be achieved. In addition, tightening bolt 3
3, the entire plate cylinder device 12 can be pulled out from the shaft 34.

The scale 35 for circumferential position adjustment of the present invention is as follows:
It may be carved on the outer periphery of the flange of the drum 23, or the plate cylinder collar 24 may be fixed to the drum 23 by, for example, providing a set screw in a part of the plate cylinder collar 24 and fixing it to the drum 23. Of course, it is possible.

According to the present invention, loosening the tightening bolt 33,
Adjustment of the plate position has been simplified, as axial adjustment can be performed simply by rotating the knob 37, and circumferential adjustment can be performed simply by loosening the setscrew 28. Furthermore, the entire plate cylinder device can be easily replaced by simply removing the tightening bolts 33. Furthermore, since the ring 25, bolt 33, and knob 37 provided at the front are in the form of a rotating body such as a flange type or a ring type, there is little danger, and there is no need to provide a guard, so it is possible to replace the plate cylinder device. The plate position adjustment work is further simplified.

[Brief explanation of drawings]

FIG. 1 shows a front view of a two-color printing example of a rotary type small-sized three-dimensional article printing machine according to the present invention. FIG. 2 shows a side half-sectional view of an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1...Main frame, 2...Printing device block, 3...Print material supply device block, 4...Front flat panel, 5...Adjustment knob, 12...Printing roll, 13A, 13B...Form roll, 14A ~1
8A, 14B to 18B...Kneading printing roll group, 2
1... Inner boss, 22... Outer boss, 23... Drum, 24... Plate cylinder collar, 25... Fixed ring, 26... Tightening collar, 27... Indexing collar, 28... Set screw, 29... ...Rotation stopper member, 30...Fixing pin, 31...Pin, 32...
Pin, 33... Tightening bolt, 34... Plate roll rotation axis, 35... Scale, 36... Base line, 37...
…Knob.

Claims (1)

[Scope of utility model registration request] A plate cylinder device that is attached to the front end of the plate roll rotation shaft that projects forward of the panel, and includes an inner boss that is fitted and fixed to the plate roll rotation shaft, and a circumferential direction along the outer periphery of the inner boss. an outer boss which is integrally formed with a male thread on the outer circumferential surface, an outward flange-shaped axial adjustment knob at the front end, and an inward flange portion that covers the front edge of the inner boss; A drum is provided with a female thread that engages with the male thread, and is slidably displaced in the axial direction with respect to the inner boss while rotating together with the inner boss, and is fitted to the outer periphery of the drum so as to be rotatable in the circumferential direction. a clamping member that clamps and fixes the plate cylinder collar to the drum; and a scale that is rotatably fixed to the rear end of the drum and that indicates the circumferential positional relationship of the plate cylinder collar. and a tightening bolt having a flange-shaped head that is screwed into a female thread carved on the front end surface of the plate roll rotation shaft and comes into contact with the front surface of the inward flange of the outer boss, A plate cylinder for a rotary printing press, in which the axial and circumferential positions of a plate cylinder collar with respect to the rotation axis of the plate cylinder roll can be adjusted.